5636623 has 4 divisors (see below), whose sum is σ = 5641848. Its totient is φ = 5631400.

The previous prime is 5636621. The next prime is 5636627. The reversal of 5636623 is 3266365.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3266365 = 5 ⋅653273.

It is a cyclic number.

It is not a de Polignac number, because 5636623 - 2¹ = 5636621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5636621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328 + ... + 3373.

It is an arithmetic number, because the mean of its divisors is an integer number (1410462).

Almost surely, 2^5636623 is an apocalyptic number.

5636623 is a deficient number, since it is larger than the sum of its proper divisors (5225).

5636623 is a wasteful number, since it uses less digits than its factorization.

5636623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224.

The product of its digits is 19440, while the sum is 31.

The square root of 5636623 is about 2374.1573241889. The cubic root of 5636623 is about 177.9670750868.

The spelling of 5636623 in words is "five million, six hundred thirty-six thousand, six hundred twenty-three".